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Hazardous Weather Conditions
Lat: 38.8903694152832 Long: -77.0319595336914
Air Quality
The following air quality data are reported from McMillan Reservoir in Washington, DC:
Ozone
At ground level, ozone is harmful to human health and the environment. The National Park Service (NPS) monitors ozone in parks around the country.
Particulate Matter
Particle pollution is made up of a mixture of microscopic solids and liquid droplets suspended in air. This pollution, also known as particulate matter, includes acids (such as nitrates and sulfates), organic chemicals, metals, soil or dust particles, and allergens (such as fragments of pollen or mold spores).
Last updated: June 8, 2023